Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Spectral modulation method of single matrix three band intrinsic emitting luminophor

A spectrum modulation, phosphor technology, applied in chemical instruments and methods, use of gas discharge lamps, luminescent materials, etc., can solve problems such as unsatisfactory lumen efficiency and color reproduction, color reabsorption, thermal stability mismatch, etc.

Inactive Publication Date: 2007-06-06
TIANJIN UNIVERSITY OF TECHNOLOGY
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phosphors used are usually mixed with red, green and blue phosphors. There are color reabsorption, particle size and chemical, thermal stability mismatch, lumen efficiency and Problems such as unsatisfactory color reproduction

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spectral modulation method of single matrix three band intrinsic emitting luminophor

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] According to the chemical formula Ba of phosphor 2.7 MgSi 2-r o 8 :0.2Eu 2+ , 0.1Pr 3+ , 0.4Mn 2+ , rX, to prepare a rare earth composite sol; take X=Al, r=0.2, add aluminum ions in the form of pseudo-boehmite, mix and stir mechanically to form a doped composite sol, and let the sol stand for 1 hour; use the spray method Obtain xerogel particles; N in a horizontal tube furnace 2 +8%H 2 The phosphor is obtained by burning under a mixed weak reducing atmosphere. Accompanying drawing 1 is that the product of example 1 is under 400 nanometer wavelength light excitation, when the molar number of Al is 0 and 0.1, the emission spectrum of the product.

example 2

[0015] According to the chemical formula of the phosphor (Ba, Ca) 2.7 MgSi 2-r o 8 :0.2Eu 2+ , 0.1Pr 3+ , 0.4Mn 2+ , rX, wherein the quantity of Ba and Ca is measured equally to prepare a rare earth composite sol; take X=B+Al, r=0.6, boron and aluminum are calculated in equal quantity, boron ions are added in the form of boric acid, and aluminum ions are added in the form of aluminum nitrate Or add in the form of pseudo-boehmite, mix and stir mechanically to form a doped composite sol, and the sol is left to stand for 1 hour; dry gel particles are obtained by spraying; N in a horizontal tube furnace 2 +8%H 2 The phosphor is obtained by burning under a mixed reducing atmosphere. The emission spectrum characteristic of the product obtained by this example is the same as the wavelength peak of any curve in Fig. 1.

example 3

[0017] According to the chemical formula of phosphor Ca 2.4 MgSi 2-r o 8 :0.4Eu 2+ , 0.2Pr 3+ , 0.4Mn 2+ , rX, to prepare a dilute upper composite sol; take X=Al+B+Ga+In, r=0.4, wherein the proportions of Al, B, Ga and In are 95%, 3%, 1% and 1% respectively. Aluminum (Al) ions are added in the form of pseudoboehmite and nano-alumina in equal amounts; boron (B) ions are added in the form of boric acid; gallium (Ga) is added in the form of gallium oxide (Ga 2 o 3 ) added in the form of; indium (In) as indium oxide (In 2 o 3 ) in the form of adding; after mixing, carry out mechanical stirring to form a doped composite sol, and the sol is allowed to stand for 1 hour; obtain xerogel particles with a spray method; N in a horizontal tube furnace 2 +8%H 2 The phosphor is obtained by burning under a mixed reducing atmosphere.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to spectral modulation method of single matrix tricolor intrinsic emitting luminophor, and belongs to the field of photoelectronic information material technology. The silicate luminophor, under the activation of 380-420 nm wavelength light, can emit tricolor light of 460-470 nm, 560-580 nm and 620-650 nm separately to synthesize white light. The silicate luminophor has the chemical expression of (Ca, Sr, Ba)3-x-yMgSi2-rO8:xEu2+, yPr3+, zMn2+, rX, where, x is 0.1-0.3, y is 0.0-0.4, z is 0.2-0.6, and the modulating agent X is one of IIIA elements B, Al, Ga and In or their combination in the total molar amount r of 0.2-0.6. The modulating agent exists in the luminophor in trivalent ion state and is mixed through adding one or several of oxides or nitrates of B, Al, Ga and In into the precursor mixture solution for preparing single matrix luminophor.

Description

【Technical field】 [0001] The invention relates to the technical field of optoelectronic materials, in particular to a method for modulating the intensity ratio of red, green and blue light generated by a single-matrix three-light intrinsic emission phosphor excited by near-ultraviolet or deep blue light. 【Background technique】 [0002] One of the important technologies of the new generation of white light diodes (LEDs) is the white light synthesis mode that uses near-ultraviolet (380-410nm) GaN-based tube cores to excite phosphors. The color of this type of white light LED is determined by the phosphors, which is to improve the external quantum efficiency. And an important way of white light color rendering. The phosphors used are usually mixed with red, green and blue phosphors. There are color reabsorption, particle size and chemical, thermal stability mismatch, lumen efficiency and Unsatisfactory color reproduction and other issues. [0003] The use of a phosphor with r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/80H01L33/00H01L33/50
CPCY02B20/181Y02B20/00
Inventor 王达健陆启飞马亮顾铁成于文惠张红梅李雪征刘凌云
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com